Detachable extension guard rail



May 6, 1930. A.,A. LANGLOIS 1,

DETACHABLE EXTENSION GUARD RAIL Filed June 25, 1928 2 Sheets-Sheet l w/TNESSES INVENTOR.

ARTHUR A. LANG'LO/S wi y y 6, 1930' A. A. LANGLOIS 1,757,912

DETACHABLE EXTENSION GUARD RAIL Filed June 23, 1928 2 Sheets-Sheet 2W/T/VESSES W INVENTOR. A/fr/mfi A. AAA 620.15

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ATTORNEYS.

Patented May 6, 1930 UNITED STATES ATENT OFFICE ARTHUR A. LANGLOIS, OFKLAMATH FALLS, OREGON DETAGHABLE EXTENSION GUARD RAIL Application filedJune 23,

1 is to provide a detachable guard rail of a collapsible nature whichcan be compactly folded to occupy a small space during shipping orstoring and which can be easily assembled and quickly connected with aconventional scaffold.

A further object of the invention is to provide novel means forprotecting workmen on an elevated scafiold embodying detachablesections, any number of which can be used to form a guard rail of thedesired length according to the length of the scaffold with which it isassociated, said sections embodying novel clamps and brace chains forconnection with the scaffold.

A still further object of the invention is to provide an improved guardrail for scaf folds of the above character, which will be durable andeflicient in use, one which will be simple and easy to manufacture, andone which can be placed upon the market and associated with aconventional scaffold at a small cost.

With these and other objects in view, the invention consists in thenovel construction, arrangement and formation of parts, as will behereinafter more specifically described, claimed and illustrated in theaccompanying drawings in which drawings Figure 1 is a side elevation ofa conventional scaffold showing an improved guard rail associatedtherewith.

Figure 2 is a top plan view of a portion of a conventional scaffoldshowing the improved gu'ard rail incorporated therewith.

Figure 3 is a vertical transverse section taken on the line 33 of Figure1 looking in the direction of the arrows, illustrating the constructionof one of the end uprights or posts of the guard rail.

Figure 4 is a transverse section taken 1928. Serial No. 287,706.

on the line H of Figure 1 looking in the direction of the arrows,illustrating the construction of one of the intermediate uprights orposts of the guard rail.

Figure 5 is a side elevation of the improved guard rail showing certainof the sections thereof disconnected and in section.

Figure 6 is a detail perspective view of one of the end uprights orposts, and

Figure 7 is a diagrammatic view illustrating a shipping box or containerfor the guard rail showing the guard rail in its knocked down conditionin said container.

Referring to the drawings in detail, wherein similar referencecharacters designate cor responding parts throughout the several views,the letter A generally indicates a scaffold and B my improved guard railtherefor.

The scaffold A can be of the usual or any conventional form and as shownincludes a 7 longitudinally extending supporting body 10 which mayconsist of side rails 11 and transverse connecting rungs 12 on which canbe laid a plank or board 18. This body 10 can be suspended in anydesired way or can be" held in an elevated position by any desired typeof supporting structure.

My improved guard rail B comprises end uprights or posts 15 and aplurality of intermediate uprights or posts 16. These uprights or posts15 and 16 can be formed of tubing to provide the necessary strength andas shown the lower terminals of these uprlghts or posts 15 and 16 areflattened as at 17 terminating in U-shaped clamps 18 hav-" ing alinedopenings 19 for a purpose, which will be later described.

The end posts 15 also have their upper ends provided with extensions 20which are arcuated to provide substantially circular g shaped annularcollars 21, which can be of a resilient nature if desired.

The intermediate upright or post 16 terminates slightly below the upperends of the end posts or uprights 15 and receives T pipe- E couplings 22the arms of which can be internally threaded.

In accordance with this invention the uprights or posts 15 and 16 areadapted to support an upper guard rail member 23, which" for convenienceof assembling and disassembling may include end pipe sections 24 and anydesired number of intermediate pipe sections 25. Intermediate pipesections 25 are threaded into adjacent arms of the T pipe coupling 22,while the end pipe sections 24 are threaded into the opposite end armsof the T pipe coupling 22 and are slipped through annular collars 21 ofthe end posts 15. If desired end caps 26 can be threaded on outer endsof the end pipe sections 2% of the upper guard rail 23 in order topresent a finished appearance.

From the construction so far it can be seen that the guard rail B, as awhole, embodies a number of different sections or pieces which can bereadily disconnected from one another and placed side by side indifferent compartments of a suitable shipping box or container as shownin Figure 7 of the drawings.

\Vhen the sections or pieces of the guard rails B are assembled asdescribed, an efiicient guard will be provided and the clamps 18- formedon the lower ends of the posts or uprights are slipped over the outerlongitudinal rail 11 of the body portion 10 of the scaffolding A afterwhich bolts 27 are placed through the alined openings 19 of each clampand upon the tightening of these bolts the arms of the clamps will bedrawn into firm contact with the said rail 11 of the body 10 of thescaffold A.

I also prefer to brace the guard rail 13 when the same is placed on thescaffold A and I may use flexible chains 28 having the opposite endsterminating in hooks 29. These brace chains 28 can extend diagonallyfrom the upper guard rail 23 to the opposite longitudinal rail 11 of thebody portion of the scaffold to which the clamps 18 are connected withand the ends of the chains can be placed respectively around the guardrail 23 and the rail 11 of the body portion of the scaffold after whichthe hooks 29 can be hooked over the body portions of the chains. By thisarrangement the guard rail is effectively braced and will resist strainsplaced thereon.

' From the foregoing description it can be seen that I have provided anovel guard rail of a demountable nature for scaffolding which canbequickly and readily placed in or removed from position on thescaffolding.

Changes in details may be made without departing from the spirit or thescope of this invention, but:

What I claim as new is:

1. The combination with a scaffold including a body portion havinglongitudinally eX- tending side rails and connecting members, of a guardfor the scaffold including a plurality of spaced posts, means detachablyconnecting the lower ends of said pots to one longitudinally extendingside rail of the scaffold, an upper guard rail, means detachablyconnecting said upper guard rail to the posts, and

bracing means for said guard including a plurality of spaced chainsdetachably engaging about said upper guard rail and the side rail of thescaffold opposite to the rail receiving the clamping means of saidposts.

2. A guard rail for scafiolds comprising end posts and a plurality ofintermediate posts, clamps formed on the lower ends of said posts, Tpipe couplings carried by the upper ends of the intermediate posts,subannular collars carried by the upper ends of the end posts inalinement with said T coupling an upper guard rail including end andintermediate sections, the end sections, being received in said collarsand connected with the outer arms of the T coupling and the intermediatesections being connected to the inner arms of T couplings.

3. A safety guard for scaffolds comprising end posts, a plurality ofintermediate posts, U-shaped clamps carried by the lower ends of' saidposts, the upper ends of the end posts being provided with annularcollars, T pipe couplings carried by the upper ends of the intermediateposts, an upper guard rail including end and intermediate sections, theend sections being received in said collars and threaded in the outerarms of the T couplings, the intermediate section being threaded intothe inner arms of the T couplings, and brace chains for detachableconnection with said guard rail.

In testimony whereof I afiix my signature.

ARTHUR A. LANGLOIS.

